Diseñador de hisopos de China
13827458676 tomgong@huachenyang.com
EnglishFrançaisDeutschРусскийEspañol
 Editar Traducción

frotis bucales

» frotis bucales

Nasal swabs are more accurate than oral swabs

CATEGORÍA Y ETIQUETAS:
frotis bucales
investigación
  • Presupuesto

The new coronavirus results are an important reference for the diagnosis and efficacy evaluation of new coronavirus pneumonia. Nucleic acid test screening samples are mostly derived from deep cough sputum or throat swabs. The throat swabs are divided into nasopharyngeal swabs and oropharyngeal swabs. What is the difference between the two?

Hisopo nasofaríngeo:

Deputy Director Cai Yuexin said that the pharynx includes the nasopharynx, oropharynx, and waiting pharynx. The three have continuous mucous membranes and all belong to the upper respiratory tract area. Nasopharyngeal swabs and oropharyngeal swabs are just different sampling paths. Oral sampling is an oropharyngeal swab, and nasal sampling is a nasopharyngeal swab.

Deputy Chief Physician Liang Faya said that since the oropharyngeal swab can be operated by opening the mouth, it is relatively simple, so it is often used clinically. However, the risk of exposure to oropharyngeal swab sampling patients is very high. The sampling operator needs to face the patient. During the sampling process, the patient is prone to symptoms such as irritating dry cough and vomiting, so that the sampler is exposed to aerosol transmission with the virus. .

Expert studies have found that nasal swabs are easier to detect positive nucleic acid, the sampling time can stay in the nasopharynx for longer, and larger samples can be obtained. This is also the reason for the higher positive rate of nasopharyngeal swabs reported in the literature . Además, if the patient’s tolerance is high, surface anesthesia and contraction of the nasal mucosa can usually be performed first, and a skilled sampler can sample the patient without anesthesia.

When nasopharyngeal sampling, the operator can stand behind the patient’s side, so the patient lowers the mask to expose only the nostrils and cover the mouth. There is no need to look directly at the patient’s mouth. There is almost no pharyngeal reflex, and the exposure risk is quite low. Each patient may have a sneeze reflex after sampling, or it can be blocked immediately with elbows and tissues.

If the collection of pharyngeal swab nucleic acid test specimens is not standardized, it may lead tofalse negativeresults and delay the patient’s treatment.

así que, what is the key to the sampling of throat swab nucleic acid test specimens? Deputy Chief Physician Tian Peng said that whether it is sampling of nasopharyngeal swabs or oropharyngeal swabs, the depth of sampling and the contact time of the swabs with the mucous membrane are very important. Even if the nasopharyngeal swab is sampled, it may not be possible to collect the deep part of the nasopharynx. If the oropharyngeal swab is collected, the patient’s vomiting reaction is large and the sampling time is insufficient, then the sample collected may be virus-free, which is It is very likely to causefalse negativesin the acid test. Therejuvenationof some patients after nucleic acid testing has a lot to do with inaccurate sampling.

Formulario de Consulta ( vamos a ayudarle a volver tan pronto como sea posible )

Nombre:
*
Email:
*
Mensaje:

Verificación:
3 + 8 = ?

Tal vez como también

  • Paquetes de alojamiento

    Flocado esponja fabricante
    Hisopos médicos fabricante
    Hisopos de espuma fabricante
    Esponjas de poliester fabricante
    proveedores de hisopos estériles
    Planta de certificación de FDA

  • Nuestros productos

    Hisopos de flocado
    Sala swabbs
    Hisopos médicos
    Hisopos de espuma
    hisopos de validación de limpieza
    Frotis de la muestra
    kit de prueba de ADN
    esponjas de poliester
    hisopo de la mejilla
    Kit de recogida de saliva

  • Empresa

    Sobre nosotros
    Prensa y medios
    Noticias / blogs
    carreras
    Premios y reseñas
    Testimonios
    programa de afiliación

  • Contáctenos

    QQ:2722892
    Móvil:13827458676
    Web:www.flockedswabs.cn